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Soil test results can indicate the potential for a positive crop response to fertilizer application. The soil test must be properly calibrated and accurately interpreted for the specific crop to determine the right fertilizer amount.
Additionally, soil properties can vary significantly within a field. Factors such as soil texture, organic matter content, pH, and nutrient levels influence soil cation exchange capacity (CEC) and can differ considerably across different areas of the field.
Picture source: FAO
This common knowledge has led to Variable Rate Technology (VRT). This practice was thought to reduce the overall nutrient application, which likely will help growers adjust inputs based on soil properties, increase their yield, and benefit the environment.
To achieve optimal and integrated soil fertility, we have developed interactive Excel sheets that account for all factors, including the nutrient carryover from previous fertilizer applications. These sheets provide appropriate fertilizer recommendations for your corn, soybean, and wheat crops. The main aim is to assess the long-term spatial and temporal variability of nutrients related to fertilization programs, balance soil nutrient dynamics using soil test data to set cost-effective fertilizer application rates, enhance crops' economic returns, and support the resilience of soil conditions.
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